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Unit 4 Types of Reactions

Total questions: 30

Worksheet time: 28mins

Name
Class
Date
1.

2 NaBr + 1 Ca(OH)2 ----> 1 CaBr2 + 2 NaOH

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

2.

2 NH3+ 1 H2SO4 ----> 1 (NH4)2SO4

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

3.

3 Pb + 2 H3PO4 ----> 3 H2 + 1 Pb3(PO4)2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

4.

Na3PO4 + 3 KOH ----> 3 NaOH + K3PO4

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

5.

Pb + FeSO4 ----> PbSO4 + Fe

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

6.

CaCO3 ----> CaO + CO2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

7.

MgCl2 + Li2CO3 ----> MgCO3 + 2 LiCl

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

8.

2 RbNO3 + BeF2 ----> Be(NO3)2 + 2 RbF

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

9.

P4 + 3 O2 ----> 2 P2O3

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

10.

2 C5H5 + Fe ----> Fe(C5H5)2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

11.

2 AgNO3 + Cu ----> Cu(NO3)2 + 2 Ag

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

12.

O3 ----> O. + O2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

13.

2 NO2 ----> 2 O2 + N2

a)

Synthesis (or combination)

b)

Decomposition

c)

Single replacement

d)

Double replacement

14.

4Si + S8 --> 2Si2S4

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Double replacement

15.
Which reaction type is the following: C5H10O4 + O2 --> CO2 + H2O
a)
Decomposition
b)
Single Replacement
c)
Combustion
d)
Double Replacement
16.
Which of the following is the general formula for a decomposition reaction?
a)
A + B  → AB
b)
AB → A + B
c)
AB + C → AC + B
d)
AB + CD → AC + BD
17.
When balancing equations a ____ can be placed to the left of a formula of a substance to make the equations balanced
a)
charge
b)
subscript
c)
random number
d)
coefficient
18.
What coefficient should be used to make the following equation balanced?
N2+O2--> _NO 
a)
1
b)
2
c)
3
d)
4
19.
Balance this equation:
 __Li + __Cl2 -> __LiCl
a)
2Li + Cl2 -> 4LiCl2
b)
2Li + Cl2 -> LiCl2
c)
2Li +  Cl2 -> 2LiCl
20.
Which chemical reaction switches 2 elements?
a)
Double Replacement
b)
Single Replacement
c)
Combustion
d)
Decomposition
21.
Which chemical reaction takes place when 2 substances react to form a single product?
a)
Decomposition
b)
Double Replacement
c)
Single Replacement
d)
Synthesis
22.
This pictures simulates what type of reaction?
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
23.
What type a reaction is taking place in this picture?
a)
Synthesis
b)
Decomposition
c)
Single Replacement
d)
Double Replacement
24.
What does (aq) mean in a chemical reaction?
a)
Ag
b)
silver
c)
aqualirious
d)
aqueous
25.
What are the products in the following chemical equation? 
2H2 + O2   -->   2H2O
a)
H2
b)
O2
c)
2H2 + O2
d)
2H2O
26.
When balancing equations what does
 -->
mean?
a)
subscript
b)
equals
c)
it is just an arrow
d)
yield
27.
What is the left part of a chemical equation called?
H2 + O → H2O
a)
Reactants
b)
Products 
c)
Yields 
d)
Chemical Equation 
28.

Which type of reaction is: C2H4 + 3 O2 → 2 CO2 + 2 H2O

a)

Synthesis

b)

Decomposition

c)

Single replacement

d)

Combustion

29.

Which of the following will need to be diatomic when it is alone in a chemical reaction?

a)

nitrogen

b)

calcium

c)

cadmium

d)

tungsten

30.

In the chemical shown below what is the subscript


3 CaF2

a)

2

b)

3

c)

There isn't one

d)

Both numbers are a subscript

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